Here are photos from making a wool duvet comforter before Christmas. I didn't want to post them until after giving it as a Christmas gift.
Warning: this is just the way I do this and it seems to work for me. If you find yourself with lots of extra wool, you might want to make a few of these for your family too.
First, start out with a queen size comforter batt (about 4 pounds of wool, I have my coarser britch wool made into quilt batts - coarse Shetland and BFL isn't really that coarse) and two queen size flat sheets. I don't bother buying real expensive sheets for this anymore, the wool has a tendency to migrate out of the sheets regardless. I'll never forget the night poor Stan was snoring away and inhaled in a wool fiber from my first comforter in the middle of the night. Oh the coughing! It lasted for such a long time despite his getting drinks of water. It's funny now, but I didn't dare tell him at the time that I knew what had happened. After that night I vowed to put the comforter in a duvet like I should have done in the first. It makes all the difference.
Okay, sew the sheets right sides together at one end. Then spread one sheet out flat on the living room floor wrong side up.
Now unroll the wool batt on the sheet...I love the batts Zeilinger's makes, they are all one piece! Here is the batt completely unfolded on the sheet. If you don't have one solid queen size batt, just lay the lengths of batting evenly over the sheet.
You can adjust the batt to fit, but make sure you have enough room on the unsewn sides to fold the edges in and pin them together...Here it's all pinned together...don't try to sew the edges together yet!First you need to tie it together with a needle and some handspun yarn. I don't have any quilting equipment so I just kneel on the quilt and start with a tie smack dab in the center. Then I add another one half way between the first tie and the edge, working in all four directions.
From there I add ties midway between the ties and eventually it looks like this... You can sew the folded edges together anytime after you've got enough ties in place to keep the batt from clumping up. I just top stitch 1/4 inch from the edge all the way around, including the sewn side.
The whole project only takes a couple hours. Wool is so nice to sleep under, we use our 5 pound quilt only during the fall, winter and spring though. It's too heavy for summer use. But I'd bet a lighter weight wool comforter would be just fine in the summer.